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Heterobimetallic ruthenium-zinc complexes with bulky N-heterocyclic carbenes: Syntheses, structures and reactivity

Espinal-Viguri, M., Varela-Izquierdo, V., Miloserdov, F.M., Riddlestone, Ian M., Mahon, M.F. and Whittlesey, M.K. (2019) Heterobimetallic ruthenium-zinc complexes with bulky N-heterocyclic carbenes: Syntheses, structures and reactivity Dalton Transactions, 48 (13). pp. 4176-4189.

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Abstract

The ruthenium–zinc heterobimetallic complexes, [Ru(IPr)₂(CO)ZnMe][BArF₄] (7), [Ru(IBiox6)₂(CO)(THF)ZnMe][BArF₄] (12) and [Ru(IMes)′(PPh₃)(CO)ZnMe] (15), have been prepared by reaction of ZnMe₂ with the ruthenium N-heterocyclic carbene complexes [Ru(IPr)₂(CO)H][BArF₄] (1), [Ru(IBiox6)₂(CO)(THF)H][BArF₄] (11) and [Ru(IMes)(PPh₃)(CO)HCl] respectively. 7 shows clean reactivity towards H₂, yielding [Ru(IPr)₂(CO)(η²-H₂)(H)₂ZnMe][BArF₄] (8), which undergoes loss of the coordinated dihydrogen ligand upon application of vacuum to form [Ru(IPr)₂(CO)(H)₂ZnMe][BArF₄] (9). In contrast, addition of H₂ to 12 gave only a mixture of products. The tetramethyl IBiox complex [Ru(IBioxMe₄)₂(CO)(THF)H][BArF₄] (14) failed to give any isolable Ru–Zn containing species upon reaction with ZnMe₂. The cyclometallated NHC complex [Ru(IMes)′(PPh₃)(CO)ZnMe] (15) added H₂ across the Ru–Zn bond both in solution and in the solid-state to afford [Ru(IMes)′(PPh₃)(CO)(H)₂ZnMe] (17), with retention of the cyclometallation.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Chemistry
Authors :
NameEmailORCID
Espinal-Viguri, M.
Varela-Izquierdo, V.
Miloserdov, F.M.
Riddlestone, Ian M.i.riddlestone@surrey.ac.uk
Mahon, M.F.
Whittlesey, M.K.
Date : 19 February 2019
Funders : European Union, Engineering and Physical Sciences Research Council (EPSRC)
DOI : 10.1039/c8dt05023f
Grant Title : Marie Curie Individual Fellowship
Copyright Disclaimer : © The Royal Society of Chemistry 2019
Additional Information : 12 month embargo. No further action
Depositing User : Clive Harris
Date Deposited : 18 Jun 2019 10:27
Last Modified : 18 Jun 2019 10:28
URI: http://epubs.surrey.ac.uk/id/eprint/852011

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